<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script>
        // let name = prompt('请输入你的姓名')
        // let age = prompt('请输入年龄')
        // document.write(`大家好,我叫${name},我今年${age}岁`)

        let num1 = +prompt('请输入第一个数字')
        let num2 = +prompt('请输入第二个数字')
        document.write('合是:', num1 + num2)

    </script>
</body>

</html>